48 Hours S18E21 - Texas Confidential

By all appearances, Bob and Doris Angleton led a charmed life with their beautiful 12-year-old twin daughters in one of Houston's most affluent neighborhoods. Bob was a multi-millionaire and Doris a beloved, doting mother. But on an April evening in 1997, Bob and his daughters came home from a softball game and discovered Doris dead on the kitchen floor: shot 12 times in the head and chest. Police would soon learn that this was a family full of secrets -- illegal gambling, love affairs, incriminating tapes and a violent feud between brothers.